<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; = charset=iso-8859-1"> <META content="MSHTML 6.00.2900.2802" name=GENERATOR> <STYLE>@font-face { font-family: Tahoma; } @page Section1 {size: 8.5in 11.0in; margin: 1.0in 77.95pt 1.0in 77.95pt; = } P.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman" } LI.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman" } DIV.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman" } A:link { COLOR: blue; TEXT-DECORATION: underline } SPAN.MsoHyperlink { COLOR: blue; TEXT-DECORATION: underline } A:visited { COLOR: purple; TEXT-DECORATION: underline } SPAN.MsoHyperlinkFollowed { COLOR: purple; TEXT-DECORATION: underline } P.MsoPlainText { FONT-SIZE: 10pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Courier New" } LI.MsoPlainText { FONT-SIZE: 10pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Courier New" } DIV.MsoPlainText { FONT-SIZE: 10pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Courier New" } P { FONT-SIZE: 12pt; MARGIN-LEFT: 0in; MARGIN-RIGHT: 0in; FONT-FAMILY: = "Times New Roman" } SPAN.emailstyle18 { COLOR: navy; FONT-FAMILY: Arial } SPAN.EmailStyle20 { COLOR: navy; FONT-FAMILY: Arial } DIV.Section1 { page: Section1 } </STYLE> </HEAD> <BODY lang=EN-US vLink=purple link=blue bgColor=white> <DIV><FONT face=Arial size=2>Well, I don't have a gauge nearly as = cool as Ron's (and indeed, his is totally cool), but I have a system that works very = well. I simply measure the soundboard width cross grain. Wood in my shop is at = about 9% MC. I find that a three-foot-wide panel will shrink about 1.5 to 2 = millimeters by the time it dries down to 6% MC. I put a small tack at one side of = the panel and mark the other edge. It's pretty easy to measure to within 1/10 = of a millimeter. It really only takes two or three days to dry a panel down. = You can test this pretty easy also by simply drying the panel down to what = should be 5.5% MC while monitoring width. After it stabilizes after a couple days, = let the hot box go up to conditions that should produce 6% MC - and watch the = panel width increase a couple tenths of a millimeter.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>If the panel is already ribbed, I guess = you could then measure changes in crown. With a feeler gauge, you could measure = changes in crown pretty accurately also. And do the same thing to test it = - target the box environment for 5.5% MC, monitoring crown - after it stabilizes, let = the box come up to 6% MC conditions and watch the crown increase a little bit.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Terry Farrell</FONT></DIV> <BLOCKQUOTE dir=ltr style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; = BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: = black"><B>From:</B> <A title=davidlovepianos@comcast.net href="mailto:davidlovepianos@comcast.net">David Love</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A = title=pianotech@ptg.org href="mailto:pianotech@ptg.org">'Pianotech List'</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, January 23, 2006 = 8:44 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> RE: Humidistat for = Wood conditioning box</DIV> <DIV><BR></DIV> <DIV class=Section1> <P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">How long do = you usually give for a ribbed soundboard panel to equalize (assuming you = haven’t built one of Ron N’s cool gauges)?</SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: = Arial"></SPAN></FONT> </P> <DIV> <P><FONT face="Times New Roman" color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy">David Love</SPAN></FONT><FONT = color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy"><BR><A = href="mailto:davidlovepianos@comcast.net">davidlovepianos@comcast.net</= A> </SPAN></FONT></P></DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Tahoma = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">-----Original Message-----<BR><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> = <A = href="mailto:pianotech-bounces@ptg.org">pianotech-bounces@ptg.org</A> [mailto:pianotech-bounces@ptg.org] <B><SPAN style="FONT-WEIGHT: = bold">On Behalf Of </SPAN></B></SPAN></FONT><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: = Tahoma">Farrell</SPAN></FONT><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"><BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Monday, January 23, 2006 = 4:50 PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> = </SPAN></FONT><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">Pianotech = List</SPAN></FONT><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"><BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: Humidistat for = Wood conditioning box</SPAN></FONT></P> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times = New Roman" size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Yes, I monitor = temperature and RH and use a chart to determine EMC. I use a good hygrometer that has an = accuracy within 2% RH - mine actually tested out within 1/2% RH. <A = href="http://www.pacer-ind.com/hygrometers/dh50.html">http://www.pacer-= ind.com/hygrometers/dh50.html</A></SPAN></FONT></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times = New Roman" size=3><SPAN style="FONT-SIZE: = 12pt"></SPAN></FONT> </P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Terry Farrell</SPAN></FONT></P></DIV> <BLOCKQUOTE style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: = medium none; PADDING-LEFT: 4pt; PADDING-BOTTOM: 0in; MARGIN: 5pt 0in 5pt = 3.75pt; BORDER-LEFT: black 1.5pt solid; PADDING-TOP: 0in; BORDER-BOTTOM: = medium none"> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">----- Original Message = ----- </SPAN></FONT></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT = face="Times New Roman" size=3><SPAN style="FONT-SIZE: = 12pt"></SPAN></FONT> </P></DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial = color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: = Arial">Not sure I understand how a thermostat would give you a sense of = RH.  You can have 80 degrees with 90% humidity or 80 degrees with 15% = humidity.  If you are talking about using a thermostat combined with a = hygrometer and checking a chart with the equivalent EMC, you are still dependent on = the accuracy of your hygrometer which are only accurate to +/- 5% = anyway, no?</SPAN></FONT></P> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT = face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P> <DIV> <P style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman" = color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy">David Love<BR>davidlovepianos@comcast.net </SPAN></FONT></P></DIV> <P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Tahoma = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">-----Original Message-----</SPAN></FONT></P> <P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I find a thermostat to = work just as well and easy as a fancy humidistat. I use a thermostat = designed for a reptile terrarium. Just use a temp/RH chart along with it and it's = a cinch. Cost is about $30.</SPAN></FONT></P> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times = New Roman" size=3><SPAN style="FONT-SIZE: = 12pt"></SPAN></FONT> </P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Terry Farrell</SPAN></FONT></P></DIV> <BLOCKQUOTE style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: = medium none; PADDING-LEFT: 4pt; PADDING-BOTTOM: 0in; MARGIN: 5pt 0in 5pt = 3.75pt; BORDER-LEFT: black 1.5pt solid; PADDING-TOP: 0in; BORDER-BOTTOM: = medium none"> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">----- Original = Message ----- </SPAN></FONT></P></DIV> <DIV style="font-color: black"> <P class=MsoNormal style="BACKGROUND: #e4e4e4; MARGIN-LEFT: = 1in"><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P></DIV> <P class=MsoPlainText style="MARGIN-LEFT: 1in"><FONT = face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">I found this humidistat = that I would use for a wood conditioning box that seems to be fairly good but = expensive ($290).  Anyone have any experience with it or can you = suggest one that works as well for less $$$.  It’s the RHC that I’m = looking at—scroll down to the second unit.  </SPAN></FONT></P> <P class=MsoPlainText style="MARGIN-LEFT: 1in"><FONT = face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt"></SPAN></FONT> </P> <P class=MsoPlainText style="MARGIN-LEFT: 1in"><FONT = face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt"><A = href="http://www.greenair.com/humidistat.htm">http://www.greenair.com/h= umidistat.htm</A></SPAN></FONT></P> <P class=MsoPlainText style="MARGIN-LEFT: 1in"><FONT = face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt"></SPAN></FONT> </P> <P class=MsoPlainText style="MARGIN-LEFT: 1in"><FONT = face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt"></SPAN></FONT> </P> <P class=MsoPlainText style="MARGIN-LEFT: 1in"><FONT = face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">David = Love</SPAN></FONT></P> <P class=MsoPlainText style="MARGIN-LEFT: 1in"><FONT = face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt"><A = href="mailto:davidlovepianos@comcast.net">davidlovepianos@comcast.net</= A> </SPAN></FONT></P> <P class=MsoPlainText style="MARGIN-LEFT: 1in"><FONT = face="Courier New" size=2><SPAN style="FONT-SIZE: = 10pt"></SPAN></FONT> </P></BLOCKQUOTE></BLOCKQUOTE></DIV></BLOCKQUOT= E></BODY></HTML>